| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | play a key role in | 119 |
|
| 2 | [vb past] a key role in | 36 |
|
| 3 | played a key role in | 34 |
|
| 4 | [vb -s] a key role in | 26 |
|
| 5 | [vb pp] a key role in | 24 |
|
| 6 | have a key role in | 22 |
|
| 7 | played a key role in | 22 |
|
| 8 | [vb infin] a key role in | 22 |
|
| 9 | plays a key role in | 19 |
|
| 10 | play a key role in | 17 |
|
| 11 | [vb base] a key role in | 16 |
|
| 12 | [v-ing] a key role in | 12 |
|
| 13 | playing a key role in | 11 |
|
| 14 | [to-vb] a key role in | 10 |
|
| 15 | to play a key role in | 9 |
|
| 16 | have a key role in | 8 |
|
| 17 | play a key role in | 7 |
|
| 18 | has a key role in | 6 |
|
| 19 | have a key role in | 5 |
|
